DECIDUOUS TREES. 117 
open sinuses, pubescent beneath, petiole short; acorn about 
one half inch long, oval, about one third of its length 
5) 
being inclosed in the cup; tree of medium size; wood 
very tough, valuable; common in poor soils, both North 
and South. 
Quercus macrocarpa (Mossy Cup Oak).—Leaves eight 
to twelve inches long, with seven to nine deeply sinuated 
lobes, the lobes rounded, sometimes toothed, pale pubes- 
cent beneath; acorn large, scales on the cup thick, the 
upper ones long, fringe-like. On the rich lands of the West 
the acorns grow to a very large size, and are much sought 
after in some sections for making household ornaments ; 
tree of medium size; more plentiful at the West than 
elsewhere. 
Quercus Prinus (Swamp Chestnut Oak).—Leaves ob- 
long, or obovate oblong, coarsely toothed, smooth, shining 
above, pale pubescent beneath; acorn about one inch long, 
cup rather shallow, rough, with tubercled scales ; common 
in low grounds at the South. A handsome tree, but wood 
not equal to some of our Northern species. 
A variety of this species called Q. monticola, or Rock 
Chestnut Oak, is found in New York, Ohio, and Pennsy]- 
vania, as well as in the Southern States. It is a handsome 
tree, and the timber is valuable. Q. discolor, or Swamp 
White Oak, is also a variety of this species. Its leaves 
are more deeply sinuate-toothed than Q. Prinus. | 
Quercus Castanea (Yellow Chestnut Oak).—Leaves 
oblong acuminate, sharply toothed, very smooth above, 
slightly downy beneath, resembling the Chestnut more 
than the other species; acorn one half to three quarters of 
